emf term and "set encoding"

[Allin C. <cot...@wf...>]

At present the EMF terminal pays no heed to "set encoding".  This 
means, for example, that if, on Linux, you create a plot file with 
strings encoded in CP1250 and do

set encoding cp1250
set term emf
set output 'foo.emf'
<plot stuff with strings>

You get an EMF file with blanks or funny stuff where the Eastern 
European accented characters should be.

The attached patch fixes this for cp1250, and also contains a 
tentative fix for iso_8859_9, mapping it onto Windows' 
TURKISH_CHARSET.  It's possible that one could map koi8r onto 
RUSSIAN_CHARSET, I'm not sure.  But cp1250 I'm sure about.

-- 
Allin Cottrell
Department of Economics
Wake Forest University, NC